94481579581 has 2 divisors, whose sum is σ = 94481579582. Its totient is φ = 94481579580.

The previous prime is 94481579557. The next prime is 94481579651. The reversal of 94481579581 is 18597518449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75259143556 + 19222436025 = 274334^2 + 138645^2 .

It is a cyclic number.

It is not a de Polignac number, because 94481579581 - 2²¹ = 94479482429 is a prime.

It is a super-2 number, since 2×94481579581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94481579081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47240789790 + 47240789791.

It is an arithmetic number, because the mean of its divisors is an integer number (47240789791).

Almost surely, 2^94481579581 is an apocalyptic number.

It is an amenable number.

94481579581 is a deficient number, since it is larger than the sum of its proper divisors (1).

94481579581 is an equidigital number, since it uses as much as digits as its factorization.

94481579581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 61.

The spelling of 94481579581 in words is "ninety-four billion, four hundred eighty-one million, five hundred seventy-nine thousand, five hundred eighty-one".